mirror of
https://github.com/wader/fq.git
synced 2024-12-25 22:34:14 +03:00
2fc0a71a47
Move scalar into own package. Split scalar code into decode related scalar code (that reads etc) and scalar code that just transform the scalar value. Use a scalar.Mapper interface instead of just a function. Make mappers, assert and validat impement the interface.
37 lines
739 B
Go
37 lines
739 B
Go
package id3
|
|
|
|
import (
|
|
"github.com/wader/fq/format"
|
|
"github.com/wader/fq/format/registry"
|
|
"github.com/wader/fq/pkg/decode"
|
|
"github.com/wader/fq/pkg/scalar"
|
|
)
|
|
|
|
func init() {
|
|
registry.MustRegister(decode.Format{
|
|
Name: format.ID3V11,
|
|
Description: "ID3v1.1 metadata",
|
|
DecodeFn: id3v11Decode,
|
|
})
|
|
}
|
|
|
|
func id3v11Decode(d *decode.D, in interface{}) interface{} {
|
|
d.AssertAtLeastBitsLeft(128 * 8)
|
|
d.FieldUTF8("magic", 4, d.AssertStr("TAG+"))
|
|
d.FieldUTF8("title", 60)
|
|
d.FieldUTF8("artist", 60)
|
|
d.FieldUTF8("album", 60)
|
|
d.FieldU8("speed", scalar.UToSymStr{
|
|
0: "unset",
|
|
1: "slow",
|
|
2: "medium",
|
|
3: "fast",
|
|
4: "hardcore",
|
|
})
|
|
d.FieldUTF8("genre", 30)
|
|
d.FieldUTF8("start", 6)
|
|
d.FieldUTF8("stop", 6)
|
|
|
|
return nil
|
|
}
|